EP2180090A1

EP2180090A1 - Hemp yarn and mix-spinning method of hemp and other fibre, and yarn thereof

Info

Publication number: EP2180090A1
Application number: EP08800500A
Authority: EP
Inventors: Guozhong Liu; Zhenhua Zhang
Original assignee: Jiangsu Redbud Textile Technology Co Ltd
Current assignee: Jiangsu Redbud Textile Technology Co Ltd
Priority date: 2007-08-20
Filing date: 2008-08-15
Publication date: 2010-04-28
Also published as: KR20100050509A; JP2010537061A; US8261525B2; JP5373792B2; WO2009024023A1; EP2180090A4; CA2698308A1; US20100139237A1

Abstract

The present invention introduces a process of spinning bast fibres through health preservating is as the following steps: Health preserving bast fibres; Opening and cleaning, carding the health preserved bast fibres and dra wing the carded health preserved bast fibres into bast fibre strips; Health preserving said bast fibre strips; Spinning the health preserved fibre strips into yam; the present invention also introduces a kind of yarn made by such process; The present invention further introduces a process of blended spinning bast fibre with other fibres through health preservating, and the yarn made by such process. The present invention realizes low end breakage rate , and high efficiency, so as to achieve high quality products.

Description

TECHNICAL FIELD

The present invention relates to a bast fibre yarn obtained through spinning bast fibres, and a process of making thereof, in particular, relates to a bast fibre yarn obtained through twice health-preserving bast fibres and blended spinning bast fibres and other fibres, together with a process of making thereof.

BACKGROUND OF THE INVENTION

Bast fabrics have gained more and more popularity with people, as they are low electrostatic and have the antibacterial speciality and great absorbency. However, bast fibre, especially jute fibres include great amount of lignin, is more rigid and brickle than cotton fibres. Generally, bast fibres need to be humidified for health preservating before spun by existing technology, wherein, health preservating refers to put bast fibres in a certain temperature and humidity environment for a certain period of time. Health preservating can improve the flexibility of bast fibres. However, because of the loss of water during processing, bast fibres will become dry and easily broken. For instance, in the art of blended spinning bast fibres and other fibres, when the yarn is 12s in thinness, the end breakage rate may reach up to 300-400 times per hour for each machine averagely, which greatly raises the difficulty of bast fibres spinning, thereby reducing work efficiency and quality of products.

BRIEF DESCRIPTION OF INVENTION

One of the purposes of this invention is to provide a bast fibre yarn obtained through spinning bast fibres, and also provide step simple and efficient process of making thereof, which with low end breakage rate; additionally, another purposes of this invention is to provide a multi-fibre yarn obtained through blended spinning bast fibres and other fibres, and further provide an step simple and efficient process of making thereof, which may also with low end breakage rate.
In the present invention, a process for spinning bast fibres comprising the steps of:

a. Health preserving bast fibres;
b. Opening, cleaning, and carding the health preserved bast fibres , then, drawing the carded health preserved bast fibres into bast fibre strips;
c. Health preserving said bast fibre strips;
d. Spinning the health preserved bast fibre strips into bast fibre yarn.

The process for spinning bast fibres, wherein the step c is implemented under the circumstance where the temperature ranges from 30°C to 80°C.
The process for spinning bast fibres, wherein said step c is implemented under the circumstance where the relative humidity ranges from 80% to 100%.
The process for spinning bast fibres, wherein said step c is implemented under the circumstance where the duration of health preserving said bast fibre strips ranges from 2 hours to 14 hours.
The process for spinning bast fibres, wherein said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
The process for spinning bast fibres, wherein the weight percentage of jute fibres in bast fibres ranges from 20% to 100%.
A bast fibres yarn, wherein said bast fibre yarn is produced through the following steps:

a. Health preserving bast fibres;
b. Opening, cleaning, and carding the health preserved bast fibres, then drawing the carded health preserved bast fibres into bast fibre strips;
c. Health preserving said bast fibre strips;
d. Spinning the health preserved bast fibre strips into bast fibre yarn.

The bast fibres yarn, wherein said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
The bast fibres yam, wherein the weight percentage of jute fibres in bast fibres ranges from 20%-100%.
A process for blended spinning bast fibres and other fibres comprises the steps of:

a. Health preserving bast fibres.
b. Blending the health preserved bast fibres with other fibres, then Opening, cleaning, and carding the blended fibres, after that drawing the carded blended fibres into multi-fibre strips.
c. Health preserving said multi-fibre strips;
d. Spinning the health preserved multi-fibre strips into multi-fibre yarn.

The process for blended spinning bast fibres and other fibres, wherein, the temperature for the step c ranges from 30°C to 80°C
The process for blended spinning bast fibres and other fibres, wherein the relative humidity for said step c is from 80% to 100%.
The process for blended spinning bast fibres and other fibres, wherein, the duration of step c ranges from 2 hours to 14 hours.
The process for blended spinning bast fibres and other fibres, wherein said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
The process for blended spinning bast fibres and other fibres, wherein the weight percentage of jute fibres in bast fibres ranges 20% to 100% .
The process for blended spinning bast fibres and other fibres, wherein the weight percentage of bast fibres in the blended fibres ranges from 20% to 99%.
A multi-fibre yam, wherein said multi-fibre yarn is produced through the following steps:

a. Health preserving bast fibres;
b. Blending the health preserved bast fibres with other fibres, then Opening cleaning, and carding the,blended fibres, after that drawing the carded blended fibres into multi-fibre strips.
c. Health preserving said multi-fibre strips;
d. Spinning the health preserved multi-fibres strips into multi-fibre yarn.

The multi-fibre yarn, wherein, said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
The multi-fibre yam, wherein, the weight percentage of jute fibres in bast fibres ranges from 20%-100%.
Said technique of the present invention have the advantages to the existing technologies: In the present invention, the art of conducting twice health preservations is adopted for blended spinning bast fibres and blended spinning bast fibres and other fibres, which allows the products to have more flexibility, and also improve the spinnability of bast fibres, thereby improving work efficiency and quality of products For instance, according to the process introduced in the present invention, the end breakage rate of yarn will be averagely reduced to 150-200 times per hour for each machine when the yarn is 12^s in fineness.

DETAILED DESCRIPTION OF THE INVENTION

Preferred embodiments of the present invention have been chosen for purposes of description, wherein:

Example 1

An experiment is conducted by, firstly, health preserving jute fibres by existing technologies; then Opening, cleaning, and carding the health preserved jute fibres; next, drawing the carded health preserved fibres into jute fibre strips; after that, health preserving the jute fibre strips for 2 hours under the circumstance where the temperature is 30°C,and the relative humidity is 85%; finally, spinning the health preserved jute fibre strips into jute fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of jute fibre yarn has been averagely reduced to 200 times per hour for each machine when the jute fibre yarn is 12^s in fineness.

Example 2

An experiment is conducted by, firstly, health preserving jute fibres by existing technologies; then Opening, cleaning, and carding the health preserved jute fibres; next, drawing the carded health preserved fibres into jute fibre strips; after that, health preserving the jute fibre strips for 14 hours under the circumstance where the temperature is 80°C, and the relative humidity is 90%; finally spinning the health preserved jute fibre strips into jute fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of jute fibre yarn has been averagely reduced to 161 times per hour for each machine when the jute fibre yarn is 12^s in fineness.

Example 3

An experiment is conducted by, firstly, health preserving jute fibres by existing technologies; then Opening, cleaning, and carding the health preserved jute fibres; next, drawing the carded health preserved jute fibres into jute fibre strips; after that, health preserving the jute fibre strips for 4 hours under the circumstance where the temperature is 50°C,and the relative humidity is 100%; finally spinning the health preserved jute fibre strips into jute fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of jute fibre yarn has been averagely reduced to 176 times per hour for each machine when the jute fibre yarn is 12s in fineness.

Example 4

An experiment is conducted by, firstly, health preserving kenaf fibres by existing technology; then Opening, cleaning, and carding the health preserved kenaf fibres; next, drawing the carded health preserved kenaf fibres into kenaf fibre strips; after that, health preserving the kenaf fibre strips for 3 hours under the circumstance where the temperature is 40°C, and the relative humidity is 95%; finally, spinning the health preserved kenaf fibre strips into kenaf fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of kenaf fibre yarn has been reduced to 182 times per hour for each machine averagely when the kenaf fibre yarn is 12^s in fineness.

Example 5

An experiment is conducted by, firstly, health preserving linen fibres by existing technology; then Opening, cleaning, and carding the health preserved linen fibres; next, drawing the carded health preserved linen fibres into linen fibre strips; after that, health preserving the linen fibre strips for 6 hours under the circumstance where the temperature is 60°C, and the relative humidity is 85%; finally, spinning the health preserved linen fibre strips into linen fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of linen fibre yarn has been reduced to 154 times per hour for each machine averagely when the linen fibre yarn is 12^s in fineness.

Example 6

An experiment is conducted by, firstly, health preserving hemp fibres by existing technology; then Opening, cleaning, and carding the health preserved hemp fibres; next, drawing the carded health preserved hemp fibres into hemp fibre strips; after that, health preserving the hemp fibre strips for 10 hours under the circumstance where the temperature is 70°C, and the relative humidity is 80%; finally spinning the health preserved hemp fibre strips into hemp fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of hemp fibre yarn has been reduced to 168 times per hour for each machine averagely when the hemp fibre yarn is 12^s in fineness.

Example 7

An experiment is conducted by, firstly, health preserving bast fibres by existing technology, wherein said bast fibres comprise 90% jute fibres and 10% kenaf fibres in weight percentage; then Opening, cleaning, and carding the health preserved combination of jute fibres and kenaf fibres; next, drawing the carded bast fibre combination into bast fibre strips; after that, health preserving the bast fibre strips for 8 hours under the circumstance where the temperature is 60°C,and the relative humidity is 95%; finally, spinning the health preserved bast fibre strips into bast fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of bast fibre yarn has been reduced to 151 times per hour for each machine averagely when the bast fibre yarn is 12^s in fineness.

Example 8

An experiment is conducted by, firstly, health preserving bast fibres by existing technology, wherein said bast fibres comprise 20% jute fibres and 80% hemp fibres in weight percentage; then Opening, cleaning, and carding the health preserved bast fibres; next, drawing the carded health preserved bast fibre combination into bast fibre strips; after that, health preserving the bast fibre strips for 12 hours under the circumstance where the temperature is 70°C,and the humidity is 90%; finally, spinning the health preserved bast fibre strips into bast fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of bast fibre yarn has been reduced to 150 times per hour for each machine averagely when the bast fibre yarn is 12^s in fineness.

Example 9

An experiment is conducted by, firstly, health preserving jute fibres by existing technology and blending the health preserved jute fibres with cotton fibres into blended fibres, wherein the weight proportion of jute fibres and cotton fibres is 1:1; then Opening, cleaning, and carding the blended fibres; next, drawing the carded blended fibres into multi-fibre strips; after that, health preserving the multi-fibre strips for 8 hours under the circumstance where the temperature is 70°C,and the relative humidity is 100%; finally, spinning the health preseved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of multi-fibre yarn has been reduced to 150 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 10

An experiment is conducted by, firstly, health preserving jute fibres by existing technology and blending the health preserved jute fibres with terylene fibres into blended fibres, wherein the weight proportion of jute fibres and terylene fibres is 99:1; then Opening, cleaning, and carding the blended fibres; next, drawing the carded blended fibres into multi-fibre strips; after that, health preserving the multi-fibre strips for 2 hours under the circumstance where the temperature is 80°C, and the humidity is 80%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of multi-fibre yarn has been reduced to 185 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 11

An experiment is conducted by, firstly, health preserving jute fibres by existing technology and blending the health preserved jute fibres with polypropylene fibres into blended fibres, wherein the weight proportion of jute fibres and polypropylene fibres is 55:45; then Opening, cleaning, and carding the blended fibres; next, drawing carded blended fibres into multi-fibre strips; after that, health preserving the blended fibre strips for 14 hours under the circumstance where the temperature is 50°C,and the relative humidity is 90%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that the end breakage rate of multi-fibre yarn has been reduced to 163 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 12

An experiment is conducted by, firstly, health preserving kenaf fibres by existing technology and blending the health preserved kenaf fibres with cotton fibres into blended fibres, wherein, the weight proportion of kenaf fibres and cotton fibres is 7:3; then, Opening, cleaning, and carding the combination of jute and kenaf; after that, drawing the carded blended fibres into multi-fibre strips; after that, health preserving the blended fibre strips for 4 hours under the circumstance where the temperature is 60°C,and the relative humidity is 85%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of multi-fibre yarn has been reduced to 171 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 13

An experiment is conducted by, firstly, health preserving ramee fibres by existing technology and blending the health preserved ramee fibres with cotton fibres into blended fibres, wherein, the weight proportion of ramee fibres and cotton fibres is 1:4; then, Opening, cleaning, and carding the blended fibres; next, drawing the carded blended fibres into multi-fibre strips; after that, health preserving the multi-fibre strips for 4 hours under the circumstance where the temperature is 40°C, and the relative humidity is 95%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate of multi-fibre yarn has been reduced to 180 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 14

An experiment is conducted by, firstly, health preserving hemp fibres by existing technology and blending the health preserved hemp fibres with cotton fibres into blended fibres, wherein, the weight proportion of hemp fibres and cotton fibres is 2:3; then, Opening, cleaning, and carding the blended fibres; next, drawing the carded blended fibres into multi-fibre strips; after that, health preserving said multi-fibre strips for 3 hours under the circumstance where the temperature is 30°C, and the relative humidity is 85%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate has been reduced to averagely 180 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness..

Example 15

An experiment is conducted by, firstly, health preserving bast fibres by existing technology; wherein said bast fibres comprise 20% jute fibres and 80% kenaf fibres in weight percentage; then, blending the health preserved bast fibre combination with cotton fibres into blended fibres; wherein the weight proportion of the bast fibres and cotton fibres is 4:1; next, Opening, cleaning, and carding the blended fibres; after that, drawing the carded blended fibres into multi-fibre strips, and health preserving said multi-fibre strips for 12 hours under the circumstance where the temperature is 70°C, and the relative humidity is 95%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate has been reduced to averagely 180 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.

Example 16

An experiment is conducted by, firstly, health preserving bast fibres by existing technology; wherein said bast fibres comprise 90% jute fibres and 10% hemp fibres in weight percentage; then, blending the health preserved bast fibre conbination with cotton fibres into blended fibres; wherein, the weight proportion of the bast fibre combination and cotton fibres is 3:1; next, Opening, cleaning, and carding the blended fibres; after that, drawing carded blended fibres into multi-fibre strips and health preserving said multi-fibre strips for 5 hours under the circumstance where the temperature is 50°C,and the relative humidity is 85%; finally, spinning the health preserved multi-fibre strips into multi-fibre yarn. It is discovered after the experiment on 100 samplings that end breakage rate has been reduced to 162 times per hour for each machine averagely when the multi-fibre yarn is 12^s in fineness.
While this invention has been described as having several preferred embodiments, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from this present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.

Claims

: A process for spinning bast fibre comprising the steps of:
a. Health preserving bast fibres;

b. Opening, cleaning, and carding the health preserved bast fibres, then drawing the carded health preserved bast fibres into bast fibre strips;

c. Health preserving said bast fibre strips;

d. Spinning the health preserved bast fibre strips into bast fibre yarn.
: The process for spinning bast fibres according to claim 1, is characterized in that said step c is implemented under the circumstance where the temperature ranges from 30°C to 80°C.
: The process for spinning bast fibres according to claim 1, is characterized in that said step c is implemented under the circumstance where the relative humidity ranges from 80% to 100%.
: The process for spinning bast fibres according to claim 1, is characterized in that said step c is implemented under the circumstance where the duration of health preserving said bast fibre strips ranges from 2 hours to 14 hours.
: The process for spinning bast fibres according to claim 1-4, is characterized in that said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
: The process for spinning bast fibres according to claim 5, is characterized in that the weight percentage of jute fibres in bast fibres ranges from 20% to 100%.
: A bast fibres yam, is characterized in that said bast fibre yarn is produced through the following steps:
a. Health pr eserving bast fibres;

b. Opening, cleaning, and carding the health preserved bast fibres, and then, drawing the carded health preserved bast fibres into bast fibre strips;

c. Health preserving said bast fibre strips;

d. Spinning the health preserved bast fibre strips into bast fibre yarn.
: The bast fibres yarn according to claim 7, is characterized in that said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
: The bast fibres y am according to claim 8, is characterized in that the weight percentage of jute fibres in bast fibres ranges from 20%-100%.
: A process for blended spinning bast fibres and other fibres comprises the steps of:
a. Health preserving bast fibres;

b. Blending the health preserved bast fibres with other fibres, then Opening cleaning and carding the,blended fibres, after that drawing the carded blended fibres into multi-fibre strips.

c. Health preserving said multi-fibre strips;

d. Spinning the health preserved multi-fibre strips into multi-fibre yarn.
: The process for blended spinning bast fibres and other fibres according to claim 10, is characterized in that the temperature for said step c ranges from 30°C - 80°C
: The process for blended spinning bast fibres and other fibres according to claim 10, is characterized in that the relative humidity for said step c is from 80% to 100%.
: The process for blended spinning bast fibres and other fibres according to claim 10, is characterized in that the duration of step c ranges from 2 hours to 14 hours.
: The process for blended spinning bast fibres and other fibres according to claim 10-13, is characterized in that said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
: The process for blended spinning bast fibres and other fibres according to claim 14, is characterized in that the weight percentage of jute fibres in said blended fibres ranges from 20% to 100%.
: The process for blended spinning bast fibres and other fibres according to claim 10-13, is characterized in that the weight percentage of bast fibres in said blended fibres ranges from 20% to 99%.
: A multi-fibre yarn is characterized in that said multi-fibre yarn is produced through the following steps:
a. Health preserving bast fibres;

b. Blending the health preserved bast fibres with other fibres, then Opening cleaning, and carding the,blended fibres, after that drawing the carded blended fibres into multi-fibre strips.

c. Health preserving said multi-fibre strips;

d. Spinning the health preserved multi-fibres strips into multi-fibre yarn.
: The multi-fibre yarn according to claim 17, is characterized in that said bast fibres are either jute fibres, kenaf fibres, or hemp fibres, or at least two of them.
: The multi-fibre yarn according to claim 18, is characterized in that the weight percentage of jute fibres in bast fibres ranges from 20%-100%.